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actinic cheilitis  involvement of the lips after exposure to actinic rays, with pain and swelling and development of a scaly crust on the vermilion border; it may be acute or chronic. Called also solar cheilitis.

angular cheilitis  single or multiple fissures and cracks at the corner of the mouth on one side or both sides, which in advanced stages may spread to the lips and cheeks. Causes include primary or superimposed infection with microorganisms such as Candida albicans, staphylococci, or streptococci; poor hygiene; drooling of saliva; overclosure of the jaws in patients without teeth or with ill-fitting dentures; riboflavin deficiency; or other causes. Called also perlèche.

cheilitis glandularis  a rare disease in which the lower lip becomes enlarged and later everted, exposing inflamed and dilated openings of accessory salivary glands; the glands themselves are enlarged and sometimes nodular. It may be associated with carcinoma of the lip. There are three types: the simple type is characterized by painless pinhead-sized lesions and may develop into one of the other types; the superficial suppurative type (called also Baelz disease) is characterized by painless swelling, induration, crusting, and ulcerations of the lip; and the deep suppurative type is a deep-seated infection with abscesses and fistulous tracts that eventually form scars. Called also apostematous cheilitis, cheilitis glandularis apostematosa, and myxadenitis labialis.

solar cheilitis  actinic cheilitis.

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